Related Clues:

• Urban vermin
• Kid-friendly oath
• "Dagnabbit!"
• "Doggone!"
• ''Peanuts'' expletive
• Charlie Brown's expletive
• "Dagnabit!"
• Slum vermin
• Mrs. Frisby's charges in 'The Secret of NIMH'
• Dwellers in 17-Across
• Pied Piper's prey
• Two-timing rodents?
• 'Oh, shucks!'
• Laboratory maze navigators
• Charlie Brown's "Darn it!"